FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term embryonic ventral longitudinal glial cell ID (Ontology) FBbt:00001314 (Fly Anatomy)
Definition Embryonic interface glial cell that has its final (larval) position at the ventral surface of the neuropil (Ito et al., 1995). It migrates from its position in the medial row above the longitudinal connective during stage 16, leaving behind processes to maintain a connection to the dorsal longitudinal glia (Ito et al., 1995). There are usually two of these cells per hemineuromere in the late larva (Beckervordersandforth et al., 2008; Peco et al., 2016). They are siblings to two cells in the dorsal group, one pair of these siblings will become ensheathing glia and the other will become larval astrocytes (Peco et al., 2016).[ FlyBase:FBrf0082171 FlyBase:FBrf0205499 FlyBase:FBrf0214261 FlyBase:FBrf0231858 ]
Also Known As"M-LG" ; "medial LG" ; "medial longitudinal glial cell" (for all, see Synonyms field below)
CommentIto et al. (1995) say there is usually one cell in this cluster and sometimes two. Peco et al. (2016) show two and Beckervordersandforth et al. (2008) state that the M-LG cluster (equivalent to V-LG) contains two cells.
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VFB:FBbt_00001314
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Data ClassFieldDirect annotations
Alleles (FBal)PHENOTYPE_MANIFEST_IN
Insertions (FBti)EXPRESSION_STAGE_TISSUE_POSITION
Insertions (FBti)PHENOTYPE_MANIFEST_IN
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 embryonic ventral longitudinal glial cell (all annotations which use CV term, excluding "NOT" statements)
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embryonic ventral nerve cord__
CNS glial cell________________|
embryonic glial cell__________|
longitudinal glial cell_______|
                              embryonic longitudinal glial cell
                               |__embryonic ventral longitudinal glial cell  19 rec.
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VFB:FBbt_00001314